#include <stdio.h>
int main()
{
int i,n,j,k=1;
printf("Enter the no. of elements"); for(i=1;i<=2*n;i++)
{
if(i<=n)
{
for(j=1;j<=i;j++)
}
else
{
for(j=1;j<=i-(2*k);j++)
k++;
}
}
return 0;
}
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